四川盆地二叠~三叠系储层孔隙演化史及输导体系分析

四川盆地二叠～三叠系是近年来我国发现的重要天然气储集层,已成为我国油气的重点勘探地区之一.通过对二叠～三叠系地层过孔隙演化史及输导体系的分析与研究,明确其成藏的关键因素及有利区域.研究发现,四川盆地二叠～三叠系气藏储层孔隙发育过程可以划分为4个阶段,即原生粒间孔阶段、白云石晶间孔阶段、前期埋藏溶解孔阶段和后期埋藏溶解孔阶段,后期埋藏溶蚀孔是现今鲕滩气藏储层中的主要储集孔隙；沟通烃源岩和储层的断裂是油气运移的疏导体系,渡口河、铁山坡、罗束寨均属于北东向疏导体系类型,而金珠坪属于北西向疏导体系类型.

Permian - Triassic Sichuan reservoir porosity evolution and conducting system analysis

Northeastern Sichuan Basin, the Permian - Triassic found in China in recent years an important gas reservoir, has become the focus of China's oil and gas exploration in the world. Through the Permian - Triassic strata over the history and evolution of pore passage system of analysis and research, clearly a key factor in its accumulation and favorable areas. Found in the northeastern Sichuan Permian - Triassic gas reservoir porosity process can be divided into four stages, namely primary intergranular pore phase, dolomite intergranular pore stage, pre-and post-burial dissolution phase of the hole hole hidden dissolved phase , post-burial dissolution pores are present oolitic beach gas reservoir in the main reservoir porosity; communication source rocks and reservoir fracture system is the ease of hydrocarbon migration, crossing the river, iron hill, belong to the North East Luojiazhai to ease the system type, and Kim Ping is the North West to ease the system type.